Big Bang Theory in Physical Science
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Questions and Answers

What causes a liquid to form a Concave Meniscus?

  • When there is stronger adhesive force between the container and the liquid than the liquid’s molecules (correct)
  • When the liquid has low surface tension
  • When there is stronger cohesive force between the liquid’s molecules than the adhesive force between the liquid and the container
  • When the liquid's molecules are of different sizes

    • Which type of force determines the shape of the meniscus in a liquid?

  • Cohesive force (correct)
  • Viscosity
  • Surface tension
  • Adhesive force

    • What is the term used to describe the splitting of a large, unstable nucleus into two or more smaller, more stable nuclei?

  • Radioactive decay
  • Fusion
  • Nuclear bullet
  • Fission (correct)

    • What is the main factor contributing to a liquid's viscosity?

    <p>Increased H-bonding</p> Signup and view all the answers

    Which phenomenon allows a liquid to rise up in a narrow tube?

    <p>Capillary Action</p> Signup and view all the answers

    What is the relationship between the energy released in nuclear fission and the energy released by burning conventional fuels?

    <p>Fission releases considerably more energy per gram than burning conventional fuels.</p> Signup and view all the answers

    Which of the following is an example of a spontaneous nuclear fission reaction?

    <p>The radioactive decay of elements within the Earth's crust.</p> Signup and view all the answers

    What happens when there is stronger cohesive force between a liquid's molecules than adhesive force with the container?

    <p>Convex Meniscus forms</p> Signup and view all the answers

    What is the relationship between the human body and radioactivity?

    <p>Humans are slightly radioactive due to the presence of small amounts of radioactive isotopes.</p> Signup and view all the answers

    How does increasing molecular size affect a liquid's viscosity?

    <p>Increases viscosity due to greater dispersion forces</p> Signup and view all the answers

    What is the relationship between the radioactivity of bananas and the radioactivity of humans?

    <p>Bananas are more radioactive than humans.</p> Signup and view all the answers

    Which of the following is the most accurate description of the famous equation $E=mc^2$?

    <p>It is used to calculate the energy released when mass is converted to energy.</p> Signup and view all the answers

    What is the currently accepted theory of the origin of the universe?

    <p>The Big Bang Theory</p> Signup and view all the answers

    According to the Big Bang Theory, how did the universe begin?

    <p>With a vast expansion of extremely condensed material</p> Signup and view all the answers

    What was produced during the Big Bang Nucleosynthesis?

    <p>All hydrogen and most helium</p> Signup and view all the answers

    Why did nuclear fusion reactions cease a few minutes after the Big Bang?

    <p>The universe had expanded and cooled sufficiently</p> Signup and view all the answers

    What is the redshift observed in other galaxies evidence of?

    <p>The expansion of the universe</p> Signup and view all the answers

    What is a singularity in the context of the Big Bang Theory?

    <p>A miniscule dense collection of energy</p> Signup and view all the answers

    What is the main function of lipids in organisms?

    <p>Energy storage</p> Signup and view all the answers

    Which type of fat is solid at room temperature?

    <p>Saturated fats</p> Signup and view all the answers

    What is the main difference between monosaccharides and disaccharides?

    <p>Number of sugar molecules combined</p> Signup and view all the answers

    Why do solutions with weaker intermolecular forces have greater volatility?

    <p>Weaker adhesive forces</p> Signup and view all the answers

    Which type of macromolecule is responsible for support, enzymes, and defense in organisms?

    <p>Proteins</p> Signup and view all the answers

    What is the main role of steroids in living organisms?

    <p>Cell membrane structure</p> Signup and view all the answers

    What is the primary process responsible for the relative abundances of light elements in the universe?

    <p>Nucleosynthesis in the Big Bang</p> Signup and view all the answers

    What is the Cosmic Microwave Background?

    <p>The radiation left over from the Big Bang</p> Signup and view all the answers

    What is the primary process by which stars create elements?

    <p>Nuclear fusion</p> Signup and view all the answers

    What is the structure of giant stars described in the text?

    <p>They have an 'onion layer' structure with increasing temperatures and pressures towards the center</p> Signup and view all the answers

    What is the expansion of the universe causing?

    <p>Space itself is expanding, causing galaxies to be farther apart</p> Signup and view all the answers

    What is stellar nucleosynthesis?

    <p>The process of nuclear fusion in stars that creates heavier elements</p> Signup and view all the answers

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